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**Harvard**

Tran, H., Zylbersztejn, F., Demazière, C., Jammes, C. och Filliatre, P. (2013) *A multi-group neutron noise simulator for fast reactors*.

** BibTeX **

@article{

Tran2013,

author={Tran, Hoai Nam and Zylbersztejn, Florian and Demazière, Christophe and Jammes, Christian and Filliatre, Philippe},

title={A multi-group neutron noise simulator for fast reactors},

journal={Annals of Nuclear Energy},

issn={0306-4549},

volume={62},

pages={158-169},

abstract={A neutron noise simulator has been developed for fast reactors based on diffusion theory with multi-energy groups and several groups of delayed neutron precursors. The tool is expected to be applicable for core monitoring of fast reactors and also for other reactor types with hexagonal fuel assemblies. The noise sources are modeled through small stationary fluctuations of macroscopic cross sections, and the induced first order noise is solved fully in the frequency domain. Numerical algorithms are implemented for solving both the static and noise equations using finite differences for spatial discretization, where a hexagonal assembly is radially divided into finer triangular meshes. A coarse mesh finite difference (CMFD) acceleration has been used for accelerating the convergence of both the static and noise calculations. Numerical calculations have been performed for the ESFR core with 33 energy groups and 8 groups of delayed neutron precursors using the cross section data generated by the ERANOS code. The results of the static state have been compared with those obtained using ERANOS. The results show an adequate agreement between the two calculations. Noise calculations for the ESFR core have also been performed and demonstrated with an assumption of the perturbation of the absorption cross section located at the central fuel ring.},

year={2013},

keywords={ESFR, fast reactor, hexagonal geometry, neutron noise},

}

** RefWorks **

RT Journal Article

SR Electronic

ID 186078

A1 Tran, Hoai Nam

A1 Zylbersztejn, Florian

A1 Demazière, Christophe

A1 Jammes, Christian

A1 Filliatre, Philippe

T1 A multi-group neutron noise simulator for fast reactors

YR 2013

JF Annals of Nuclear Energy

SN 0306-4549

VO 62

SP 158

OP 169

AB A neutron noise simulator has been developed for fast reactors based on diffusion theory with multi-energy groups and several groups of delayed neutron precursors. The tool is expected to be applicable for core monitoring of fast reactors and also for other reactor types with hexagonal fuel assemblies. The noise sources are modeled through small stationary fluctuations of macroscopic cross sections, and the induced first order noise is solved fully in the frequency domain. Numerical algorithms are implemented for solving both the static and noise equations using finite differences for spatial discretization, where a hexagonal assembly is radially divided into finer triangular meshes. A coarse mesh finite difference (CMFD) acceleration has been used for accelerating the convergence of both the static and noise calculations. Numerical calculations have been performed for the ESFR core with 33 energy groups and 8 groups of delayed neutron precursors using the cross section data generated by the ERANOS code. The results of the static state have been compared with those obtained using ERANOS. The results show an adequate agreement between the two calculations. Noise calculations for the ESFR core have also been performed and demonstrated with an assumption of the perturbation of the absorption cross section located at the central fuel ring.

LA eng

DO 10.1016/j.anucene.2013.06.017

LK http://dx.doi.org/10.1016/j.anucene.2013.06.017

OL 30